Garrison Forest School

Garrison Forest School

Garrison Forest School was founded in 1910 as a private college-preparatory boarding and day school for girls on a 110-acre campus in Owings Mills, Maryland. The institution's endowment, which we estimate holds $41M in assets, reflects over a century of stewardship by a board that has historically drawn from Baltimore's concentrated financial community — particularly the leadership ranks of Brown Advisory and T. Rowe Price (Altss estimate). President of the Board George J. Sakellaris also serves as a portfolio manager at Brown Advisory, while Trustee Emeritus Henry H. Hopkins is the former chief legal counsel at T. Rowe Price and a trustee of Brown Advisory Funds, creating a direct line from the investment committee to professional money management. The endowment allocates across a mix of early-stage venture, seed investments, start-up commitments, expansion-stage deals, and fund-of-funds vehicles. The strategy appears to blend direct investments with commitments to external managers, though granular position-level disclosure is absent from public filings. Known campus assets include the main academic facilities, the residential property Lochinvar, the Mason Lord Collection, and the Equestrian Institute facilities — an unusual operating component for an educational endowment. The institution is a member school of the Baltimore Educational Scholarship Trust (B.E.S.T.) and maintains a Women in Science and Engineering (WISE) partnership with Johns Hopkins University. Team composition flows through the board structure rather than a standalone investment office. Beyond Sakellaris and Hopkins, Treasurer Amabel Boyce James brings ties to the James Family Charitable Trust. The endowment's external relationships extend to Providence College and the University of Rhode Island, where the school contributes to financial literacy and NIL education programs — an indirect signal of its institutional partnerships, though not a direct investment pipeline. No dedicated in-house CIO or OCIO disclosure has surfaced in public materials. Structurally, this endowment is unusual in combining trustee-level professional money-manager oversight with ownership of a residential property and an equestrian program — operational assets uncommon in typical educational endowments. The deep integration of Brown Advisory and T. Rowe Price alumni on the board suggests that investment decisions are made internally through that committee rather than outsourced to an OCIO, but the precise governance architecture remains opaque.